/Engine/Source/Runtime/Slate/Public/Widgets/Layout/SGridPanel.h
Removes a slot from this panel which contains the specifiedSWidgetThe true if the slot was removed and false if no slot was found matching the widget
bool RemoveSlot ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) > & SlotWidget )